Journal article

Main-sequence stars and the star formation history of the outer disk in the large magellanic cloud

JS Gallagher, JR Mould, E De Feijter, J Holtzman, B Stappers, A Watson, J Trauger, GE Ballester, CJ Burrows, S Casertano, JT Clarke, D Crisp, RE Griffiths, JJ Hester, J Hoessel, J Krist, LD Matthews, PA Scowen, KR Stapelfeld, JA Westphal

The Astrophysical Journal | Published : 1996


Using the Wide Field Planetary Camera 2 on the Hubble Space Telescope, we have obtained a deep color-magnitude diagram in V- and I-band equivalents for more than 2000 stars in a patch of the outer disk of the Large Magellanic Cloud (LMC). Aperture photometry is feasible from these data with good signal-to-noise ratio for stars with V ≤ 25, which allows us for the first time to construct a color-magnitude diagram for LMC disk stars on the lower main sequence, extending beyond the oldest main-sequence turnoff point. We analyze the structure of the main-sequence band and overall morphology of the color-magnitude diagram to obtain a star formation history for the region. A comparison between the..

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